Facebook Accuses Yahoo of Infringing on Patents — It appears that two can play at the patent infringement game. — In responding to Yahoo's lawsuit accusing Facebook of violating 10 patents, filed in the federal district court in San Jose, Calif., the social networking giant on Tuesday argued …

How Groupon accounts for its deals — It's another bad day for Groupon: not only is Andrew Ross Sorkin using the company as Exhibit A in his opposition to the JOBS Act, but more worryingly the WSJ is now reporting that the SEC is examining the earnings revision which Groupon announced yesterday.

RIM's Server Now Manages iPhone, Android Devices, Too — Acknowledging it is no longer a BlackBerry-only world, Research In Motion on Tuesday released the first version of its server software to manage other company's mobile devices. — The update to BlackBerry Mobile Fusion, as promised …

Company's Most Common Tablet Mistakes — As companies flock to the devices, they're learning a lot from their mistakes — American Airlines was an early adopter of tablet computers. As a result, it learned a lot about how best to use tablets—and where it could go wrong.

BlackBerry maker RIM sued by NXP over patents — (Reuters) - Research In Motion Ltd (RIM.TO) (RIMM.O) can add a willful patent infringement claim to its long list of troubles after a Dutch semiconductor company said on Tuesday it had filed suit against the BlackBerry maker, sending its shares tumbling.

What the Betamax Case Teaches Us About Readability — The Betamax SL6500! I totally had this model!!! — Several really smart people in our industry are arguing very publicly right now about a company called Readability and how great and/or evil their service is.

Samsung pursues ad market on its mobile devices — Mobile phone heavyweight Samsung Electronics Co. (SSNHY, 005930.SE) is playing a more hands-on role in the advertising on its devices, underlining the growing potential many companies see in mobile ads. Samsung plans to announce Tuesday …